CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (250)	$ 177	$ (20)	$ 208
Net change in unrealized gains (losses), net of tax:
Investment securities	86	(137)	485	(408)
Fair value option liabilities attributable to our own credit spread	(3)	(47)	(107)	94
Derivatives designated as cash flow hedges	(10)		9
Derivatives designated as cash flow hedges		22		34
Pension and post-retirement benefit plans	(1)	0	(4)	0
Total other comprehensive income (loss)	72	(162)	383	(280)
Comprehensive income (loss)	$ (178)	$ 15	$ 363	$ (72)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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